Can"t compile GTK on RedHat-8.0.

[Somsak RAKTHAI <rsomsak mor-or pn psu ac th>]

Dear sir,
  I used RedHat-8.0 and gtk+-2.2.0.
  When I used command "./configure", it has messages below.

checking for pkg-config... /usr/local/bin/pkg-config
checking for glib-2.0 >= 2.1.4 atk >= 1.0.1 pango >= 1.0.1... Package atk
was no
t found in the pkg-config search path.
Perhaps you should add the directory containing `atk.pc'
to the PKG_CONFIG_PATH environment variable
No package 'atk' found

configure: error: Library requirements (glib-2.0 >= 2.1.4 atk >= 1.0.1
pango >=
1.0.1) not met; consider adjusting the PKG_CONFIG_PATH environment
variable if y
our libraries are in a nonstandard prefix so pkg-config can find them.

   Please let me know how to solve this problem ?

             thank you very much.
                  regards,
                  Somsak.